package com.twelvet.framework.security.utils;

import com.twelvet.framework.core.exception.TWTException;
import com.twelvet.framework.security.domain.LoginUser;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.oauth2.common.exceptions.InvalidTokenException;

/**
 * @author twelvet
 * @WebSite www.twelvet.cn
 * @Description: 安全工具类
 */
public class SecurityUtils {

    /**
     * 获取Authentication
     *
     * @return Authentication
     */
    public static Authentication getAuthentication() {
        return SecurityContextHolder.getContext().getAuthentication();
    }

    /**
     * 获取用户
     *
     * @return String
     */
    public static String getUsername() {
        return getLoginUser().getUsername();
    }

    /**
     * 获取用户
     *
     * @param authentication authentication
     * @return LoginUser
     */
    public static LoginUser getLoginUser(Authentication authentication) {
        Object principal = authentication.getPrincipal();
        if (principal instanceof LoginUser) {
            return (LoginUser) principal;
        }
        return null;
    }

    /**
     * 获取用户
     *
     * @return LoginUser
     */
    public static LoginUser getLoginUser() {
        Authentication authentication = getAuthentication();
        if (authentication == null) {
            throw new TWTException("获取用户信息主体失败");
        }
        return getLoginUser(authentication);
    }

    /**
     * 生成BCryptPasswordEncoder密码
     *
     * @param password 密码
     * @return 加密字符串
     */
    public static String encryptPassword(String password) {
        BCryptPasswordEncoder passwordEncoder = new BCryptPasswordEncoder();
        return passwordEncoder.encode(password);
    }

    /**
     * 判断密码是否相同
     *
     * @param rawPassword     真实密码
     * @param encodedPassword 加密后字符
     * @return 结果
     */
    public static boolean matchesPassword(String rawPassword, String encodedPassword) {
        BCryptPasswordEncoder passwordEncoder = new BCryptPasswordEncoder();
        return passwordEncoder.matches(rawPassword, encodedPassword);
    }

    /**
     * 是否为管理员
     *
     * @param userId 用户ID
     * @return 结果
     */
    public static boolean isAdmin(Long userId) {
        return userId != null && 1L == userId;
    }
}